"Top Pre-market Stock Movers: IBM, Tesla, Nokia, Humana"

Several stocks are making significant moves in premarket trading, including IBM, Tesla, Nokia, and Humana. IBM's shares rose after the company reported better-than-expected fourth-quarter earnings, while Tesla's stock fell following disappointing earnings. Nokia's stock also dropped after the company reported a decline in quarterly profits, and Humana's shares rose after the health insurer reported higher-than-expected quarterly profit.